Brandon Cox still has a scar on his upper left arm after being shot by New York police during a 2010 shooting that killed his best friend, “DJ” Henry.

Cox, now 21, was a front passenger in Henry’s Nissan Altima when gunfire broke out outside a bar and restaurant in Thornwood, N.Y., in October 2010. But the visible scar near his tricep muscle doesn’t compare with the emotional scar from that fateful night, Cox said.

“I feel lucky I survived, but then again, it’s almost worse being a survivor,” Cox, a senior at Stonehill College, said Monday. “I mean, why did I live and he didn’t?”

Monday’s release of evidence from the investigation into the fatal shooting of Henry by a police officer in New York “is a good thing,” Cox said.

“I think it will give people a chance to see both sides of the case,” said Cox, 21.

Danroy Henry, Henry’s father, said Monday the release of the documents “adds a more transparent view” of the events that led to his son’s death.

“We needed transparency ... We want objectivity here, not versions, so we think this is helpful in that regard,” said Henry, 46.

Henry said he has reviewed some of the documents, but not the cruiser dash board video, which shows police and emergency personnel responding to the shooting scene. Henry’s Nissan Altima is shown with a blown-out tire and its headlights on.

“It’s hard. We’ve tried to protect ourselves around that,” Henry said of viewing the evidence. “They take us too painfully close to that moment.”